raw mode vs cooked mode

[uunet!bria!mike]

In an article, A.J.Rasiah at massey.ac.nz writes:
>I would like to write a program which will get characters from the terminal
>in "raw" mode. The default is "cooked" mode. Can someone point me in the
>right direction? I am using a Sun Workstation running UNIX 4.2 BSD.

This should be in a FAQ somewhere.  If your system groks termio, then
here is what you could have:

	struct termio	old, new;

		ioctl(0,TCGETA,&old);	/* save current state */
		ioctl(0,TCGETA,&new);	/* save current state */

		new.c_lflag &= ~ICANON; /* no canonical input */
		new.c_lflag &= ~ISIG;   /* no signals */
		new.c_cc[VMIN] = 1;	/* return one character */
		new.c_cc[VTIME] = 0;	/* no timeout */

		ioctl(0,TCSETA,&new);	/* change current state */

			.
			.
			.

		ioctl(0,TCSETA,&old);	/* restore previous state */

If you want to grab cursor keys, function keys, etc. then you're better
off using curses (although if you are *really* interested, I can give you
the algorithm for snagging ``special'' keys as well).

-- 
Michael Stefanik, MGI Inc., Los Angeles| Opinions stated are not even my own.
Title of the week: Systems Engineer    | UUCP: ...!uunet!bria!mike
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